prmt5 mutation affects the period of all and the amplitude of expression of a subset of clock genes. Col and prmt5-54 seedlings were entrained to photocycles (LD: 12/12 h) for 10 d before release into LL. Transcript levels (mean ± SEM from two independent experiments) of (A) CCA1, (B) LHY, (C) TOC1, (D) PRR7, (E) PRR9, and (F) GI were estimated by qPCR and normalized to tubulin (TUB3) expression. White and gray bars indicate subjective day and night, respectively.